Oven and the like



March 2, 1937. c 1 KESSLER 2,072,820

OVEN AND THE LIKE Filed NOV. 4, 1935 5 Sheets-Sheet 1 /0 u f 1; 7 f -4 4 i r J n J n n A 2 6 {Q0 8 I IINVENTOR. BY QM M And ATTORNEY5 March 2, 1937. Q J KESSLER 2,072,820

OVEN AND THE LIKE Filed Nov. 4, 1935 5 Sheets-Sheet 2 INVENTOR.

KVW M {)LJA,Mv&/ m)r ATTORNEYS.

March 2, 1937. I c KESSLER 2,072,820

OVEN AND THE LIKE Filed Nov. 4, 1935 5 Sheets-Sheet 3 INVENTOR.

ATTORNEYS March 2, 1937. Q KESSLER 2,072,820

OVEN AND THE LIKE Filed Nov. 4, 1935 5 Sheets-Sheet 4 INVENTOR.

ATTORNEY5 March 2, 1937. c. J. KESSLER OVEN AND THE LIKE Filed Nov. 4, 1935 5 Sheets-Sheet 5 Patented Mar. 2, 1937 NETED STATES PATENT QFHQE OVEN AND THE LIKE Application November 4, 1935, Serial No.48,104

13 Claims.

This invention consists in improvements in the construction of sheet metal doors and the adjacent parts of sheet metal enclosures to which the doors are attached and wherewith they co- 5 operate. The improvements are peculiarly appropriate to the ovens and oven doors of oil burning cooking ranges in connection with which the invention had its conception and accordingly is herein shown. .The general purpose of the invention is the production. of a strong and durable sheet metal construction having the requisite degree of stiffness and rigiditywithout the use of heavy skeleton frames inside the door and about the door opening, the need of reinforcements being minimized by the character and formation of the sheet metal parts, said parts fitting together in suchrnanner as to facilitate assembly and enhance the appearance of the finished product. Further objects and advantages, in most cases of a more limited nature, will appear as I proceed to describe the invention by reference to the accompanying drawings in which the present preferred embodiment is illustrated and wherein Fig. l is a fragmentary front elevation, and Fig. 2

is a similar plan view of a range incorporating an oven constructed in accordance with the invention; Fig. 3 is a central vertical section from front to rear through the front portion of the 30 oven, showing the door closed; Fig. 4 is a similar view, showing the door open; Fig. 5 is a sectional detail on the line 55 of Fig. 4; Fig. 6 is a horizontal section, on the line 66 of Fig. 3, embracing the parts in the region of one of the oven door hinges and counterbalancing springs; Fig. 7 is a sectional detail adjacent the bottom of the oven, onthe lines l-'l of Figs. 3 and 6; Fig. 8 is a similar view adjacent the top, of the oven, the plane of section being approximately that shown by the line 8-8 of Fig. 3; Fig. 9 is a perspective view of one end of the arch-like stiffener that extends across the front of the top and a short way down the sides of the oven; Fig. 10 is a vertical section through the oven door immediately adjacent the end nearest the observer, the upper portion of the view being central of the adjacent door lining stiffener while the lower portion is just inside the telescoping flanges of the door panel and lining, the offset planes of the section being indicated by the line l6|0 of Fig. 1, the View further showing the door panel in full lines in the process of applyng it to the lining and, adjacent the lower end of the view, in dotted lines as it appears when the parts are assembled; Fig. 11 is a fragmentary front view of the door lining showing the lower part of one of the lining stilleners with the hinge member riveted thereto, the hinge pintle, door panel and panel screw being shown in dot-and-dash lines; Fig. 12 shows the reverse side of the parts illustrated in Fig. 11, and Fig. 13 is a horizontal section through the corner of the door assembly on the axis of the hinge pintle, the plane of section being indicated by the line |3-l3 of Fig. 11.

The top, sides and bottom of the enclosure or oven are designated, generally, by the reference letters A, B, and C, respectively, the bottom be ing constituted, in the present instance, of an integral part of the range top. Hinged within the open front, or door opening, of the enclosure or oven is the door or closure D.

The top, sides and door are of double wall construction, the same comprising outer panels and linings that are spaced inwardly therefrom, all being suitably formed of sheet metal. The panel I of the top A has side flanges 2 and a front flange 3, the lower edge of the latter being turned inwardly to form a horizontal ledge 4, as best shown in Figs. 3, 4 and 8. The upper portion of the flange 3 is inset slightly from the plane of the lower portion thereof to insure ample clearance for the flanged upper edge of the door panel, later to be described. The lining 5 of the top is flanged upwardly along its forward edge and rests upon the ledge l, and the same is slightly depressed, as shown at I, for the accommodation of said ledge, this arrangement serving to properly position the lining with respect to the ledge, and, at the same time, to dispose its un derneath surface in the same plane as the corresponding surface of the ledge. An insulating lining 6 is preferably disposed between the lining 5 and panel I in spaced relation to both.

The oven, with its door, viewed from the front, is symmetrical. In other words, it is identical (excepting that its structural details are reversed) on both sides of its vertcal center, wherefore an accurate understanding of the complete structure may be had from detailed illustration and description of one side. The top portions of the outer panels ll] of the sides B are gradually curved inwardly into a horizontal plane to meet, in flush relation thereto, the panel I of the top, the adjacent edges of the panels 10 being flanged downwardly at l I for engagement with the flanges 2 of the panel I. The front ends of the side panels ID are similarly formed and have vertical flanges l2 that merge with the former flanges I I. The side panels Ill also have base flanges it that rest upon the bottom C and are suitably fastened thereto, as by means including screws |4 (Figs. 6 and 7). As best appears from Figs. 2, 4 and 5, the sides B extend a material distance beyond the front edge of the top A, and projecting inwardly therefrom and inclined at a slight angle downwardly and forwardly from the front corners of the top are door stops l5, the same being integral parts of members 6 whose top and forward edge portions are engaged against the inner sides of the previously mentioned flanges |2. To impart the required degree of rigidity to the top portion of the sheet metal enclosure or oven, I employ an arch-like stiffener made up of an angle bar 20 and bracket-like ends 2|, each of the latter having right angularly disposed branches to the horizontal ones and to the horizontal branches of the two ends 2| are riveted the opposite ends of the bar 29. The vertical branches of the ends 2| include forwardly directed flanges 23, the same being engaged with the inner sides of the members l6 (Figs. 4, 5 and 8)' to which they are secured by screws 24. It will be seen, therefore, that the angles which constitute the vertical branches of the ends 2| fit snugly about and reinforce and stiffen the angularly disposed parts of the members Hi.

The lining of each of the sides B is designated 25, and along its forward edge is provided with a right angle flange 26 which is disposed immediately inwardly of the corresponding door stop I 5, the same being offset inwardly throughout its upper portion to accommodate the vertical branch of the adjacent end 2| of the previously mentioned stiffener, as best shown in Fig. 4. Under this arrangement, the surfaces of the linings 25 are substantially flush with the edges of the door stops |5 (Fig. 5). The floor of the oven is formed of a lining 28, having peripheral flanges 29 that rest upon the bottom C.

Fitted within the front lower corner of each of the sides B is a so-called hinge plate 30 (Figs. 3, 4, 6 and 7). Each hinge plate, generally triangular in form, has a base flange 3| and a vertical flange 32, the latter extending along its front edge. The base flange 3| of the hinge plate rests upon the flange 3 of the adjacent side panel and is held in place by the previously mentioned screws l4 that are extended through alined holes in the bottom C and flange 3 and are threaded into the base flange 3|. Adjacent its forward edge, each of the hinge plates 3!] is fastened to the contiguous member |6 by a screw 33.

The door lining, designated generally by the numeral 35, is depressed inwardly throughout its central region, as indicated at 35 When the door is in closed position, the top and lateral edge portions of the lining 35 engage, respectively, the front end of the top A, and the door stops I5. lining 35 are flanged forwardly, as indicated at 33 and 31, respectively, while the sides have 'relatively deep flanges 38. 7

It will be observed that when the door is closed the flanges 33 and 31 terminate sufliciently within the area of the sides B to accommodate the door panel 4|! within said'area, the outer surface of the latter being substantially flush with the adjacent surfaces of the sides B and merging into the plane of the upper surface of the top A. The profile of the side flanges 38 of the lining 35 is such as will approximately fit the contour of the panel 40. The panel 40 is turned downwardly at its upper end to provide a lip 4|, while its later-a1 and lower edges are turned The top and bottom edges of the of the channel-like stiffeners, said webs having enlarged holes that provide clearance for the inner ends of the screws. It will be noted that the spacers and lining have interengaged depressed portions which permit countersinking of the tapered heads of the screws. Secured, as by rivets 50, to the lower end of the outer flange of each of the stiffeners 45 is the base 5| of a hinge member 52, the body portion of which has a notch 53 and resembles a hook. The stiffener is spaced from the adjacent end flange 38 of the lining a distance substantially equal to the thickness of the hinge member and the body portion of said member projects through a slot 54 in the lining 35, as well as through alined slots in the adjacent door stop l5 and flange 26 of the contiguous side lining 25. The hook-shaped body portions of the hinge members are thus disposed alongside the hinge plates 30 when the door is installed.

In mounting the door, the lining, with the stiifeners 45 and hinge members 52 secured thereto in the manner above described, is placed within the door opening, and hinge pintles 60 are projected from inside the door lining laterally through alined apertures in the opposed flanges of the stifieners 45 and through registering holes in the hinge members 52, flanges 38 and I2 and members I6, into holes or recesses in the hinge plates 30, wherein they have bearing. Spacing washers 6| are applied to the pintles between the door and flanges 2. The outward movement of the pintles is limited by their heads 62 that are arranged to engage the inner flanges of the stifieners. After the door lining is thus mounted, the door panel 4|] is applied to the lining by engaging its lip 4| over the top of the lining, as indicated in full lines in Fig. 10, and the lower edge of the panel is then swung inwardly until its bottom flange 43 is engaged beneath the corresponding flange of the lining, as shown in dot-and-dash lines in the same view. The side flanges 42 of the door panel are notched at 63 to accommodate the hinge pintles 60, while the bottom flange 43 is provided with apertures 64 that register with holes in the lining flange 3! through which screws 65 are engaged; These screws are threaded into laterally extending lugs 66 of the stiffeners 45 and their inner ends occupy a position adjacent the heads 62 of the pintles 60 and positively prevent appreciable retraction of the pintles or their withdrawal from the bearing holes or recesses in the hinge plates 30.

A tong-like spring 10 is associated with each door hinge, and one of its ends, formed with a depression 1|, is engaged through a perforation in a lateral lug 12 of the corresponding hinge plate 30, while its opposite end is turned laterally and engaged through the bore of a flanged thimble 13, seated within the notch 53 of the corresponding hinge member 52. The springs 10 are preferably made of resilient wire, formed into a coil 14 in their middle regions, and are under tension when installed so as to rather firmly hold the door in closed position, their power being such that, when the door is swung outwardly a short way, it will cause the door to be automatically returned to closed position while, on the other hand, it will be overcome by the weight of the door when the door swings toward a horizontal position, thereby to cause the door to gently gravitate to open position under the restraining influence of the springs. The hinge plates have arcuate slots 75 to provide clearance for the laterally turned ends of the springs if? when the door is swung between open and closed positions by a handle it that is attached to the panel l l near the free edge of the door. The outward swinging movement of the door is limited by stops ll that project inwardly from the hinge plates and are engaged by the inner ends of the hinge members 52, as shown in Fig. 4.

Having thus described my invention, what I claim is:

1. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the front edges of the sides, and a door inset between the front ends of the sides and whose outer surface is substantially flush with the front edges of the sides and merges with the upper surface of the top when the door is closed.

2. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the front edges of the sides, door stops extending down the sides from about the plane of the front edge of the top, and a door inset between the front ends of the sides and whose outer surface is substantially flush with the front edges of the sides and merges with the upper surface of the top when the door is in engagement with said stops.

3. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the corresponding edges of the sides, door stops extending down the sides and inclined forwardly from about the plane of the front edge of the top, and a wedge-shaped door inset between the front ends of the sides and whose outer surface is substantially flush with the front edges of the sides and merges with the upper surface of the top when the door is in engagement with said stops.

4. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the corresponding edges of the sides, the inner surface of each side adjacent the base having a hinge pintle receiving recess in axial alignment with the recess of the other side, and a door inset between the front ends of the sides and having laterally extending pintles occupying said recesses.

5. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the corresponding edges of the sides, door stops inclined downwardly and forwardly along the sides from about the plane of the front edge of the top, a wedge-shaped door hingedly supported between the front ends of the sides and whose outer surface is substantially flush with the front edges of the sides and merges with the upper surface of the top when the door is in engagement with said stops, and stop means restraining the door from swinging open beyond a position in which its inner surface is substantially horizontal.

6. An oven or the like comprising top, sides and bottom, the front edge of the top being spaced inwardly from the corresponding edges of the sides, the top and sides being of doublewall sheet metal construction, a stiffener extending through the top and into the sides to tie the sides together, and a door hingedly supported adjacent its lower edge between the front ends of the sides and whose free edge is arranged to engage the front edge of the top.

7. An oven or the like comprising top, sides and bottom, the top and sides being of double-wall sheet metal construction including outer panels and linings, the front edges of the side panels being turned toward each other and thence inwardly in substantially parallel relation to their body portions, the inwardly turned portions being flanged at right angles to form door stops that are inset from the front ends of the side panels, a stiffener extending crosswise through the top adjacent its forward end and having ends of angular formation that embrace the door stops and adjacent inwardly extended portions of the side panels, and a door hingedly supported adjacent its lower edge between the front ends of the sides and whose upper and lateral edges are arranged to engage, respectively, the front edge of the top and the aforesaid door stops.

8. An oven or the like comprising a bottom wall, side walls rising therefrom in laterally spaced relation to each other, each side wall consisting of an outer panel having an inwardly directed base flange resting upon the bottom wall and a lining spaced inwardly from the panel, a top wall bridging the space between the upper edges of the side walls, hinge plates secured within the front lower corners of the side walls and bearing upon the base flanges of the aforesaid side panels, the hinge plates having recesses for the reception of hinge pintles, and a door inset between the front ends of the side walls, and hinge pintles extending laterally therefrom and journaled within said recesses.

9. An oven or the like comprising a bottom wall, side walls rising therefrom in laterally spaced relation to each other, each side wall consisting of an outer panel having an inwardly directed base flange resting upon the bottom wall and a lining spaced inwardly from the panel, a top wall bridging the space between the upper edges of the side walls, a hinge plate disposed within the front lower corners of the side walls and having base flanges resting upon the corresponding flanges of the aforesaid side panels, means connecting the base flanges of the hinge plates and panels to the bottom wall, means connecting the upper ends of the hinge plates with adjacent parts of the side walls, the hinge plates having recesses for the reception of hinge pintles, a door inset between the front ends of the side walls, and hinge pintles extending laterally therefrom and journaled within said recesses.

10. An oven or the like comprising a bottom wall, side walls rising therefrom in laterally spaced relation to each other and consisting of outer panels and linings spaced inwardly from said panels, hinge elements secured within the lower front corners of the side walls and having pintle receiving recesses, a door inset between the front ends of the side walls, pintles extending laterally from the door and journaled within said recess, second hinge elements carried by and extending inwardly from the lower corners of the door and operating in planes substantially parallel to and adjacent the first hinge elements when the door is swung between open and closed positions, expansion springs interposed between parts of the first and second hinge elements, and stops on one of said hinge elements arranged to be engaged by the other hinge element to limit the outward swinging movement of the door.

11. An oven or the like comprising an enclosure having a door opening in one of its vertical sides Whose upper edge is inset from the vertical plane of its lower edge, a wedge-shaped door hingedly connected adjacent its thinner edgeto the enclosure adjacent the bottom of the door opening, and stop means limiting the swinging movement of the door so that when closed its outer surface is substantially vertical and when entirely open its inner surface is substantially horizontal.

12. An oven or the like comprising an enclosure having an open side, the top of the enclosure adjacent said side being inset from the vertical plane of the corresponding edge of the bottom of the enclosure, a wedge-shaped door fitting said open side and hingedly connected to the enclosure adjacent the lower edge of said open side, the front surface of the door being substantially vertical when the door is closed while its free edge contacts with the front edge of the top, and stop means locating the door, when open, in a position in which its inner surface is substantially horizontal.

13. An oven or the like comprising a bottom Wall, side walls rising therefrom in laterally spaced relation to each other, each side wall resting upon and connected to the bottom wall and consisting of an outer panel and a lining spaced inwardly therefrom, a top wall bridging the space between the upper edges of the side walls, a hinge plate secured within the front lower corners of the side walls, the hinge plates having recesses for the reception of hinge pintles, a door inset between the front ends of the side walls, and hinge pintles extending laterally therefrom and journaled within said recesses.

CHARLES J. KESSLER. 

